i just got an a/f guage and i have some questions about hookin it up. the black wire is ground, red is power, and purple is to the o2 sensor. is this correct? if so which wire for the power should i use and which wire on my 4 wire o2 sensor should i use. i have a 92 hatch with a b16. thanks

 

anyone??

 

s e a r c h is your friend

https://honda-tech.com/zerothread?id=557410

 

what about the red wire for power?

 

there are accesory outlets on your fuse box you can use. Just put a female connector on the wire and plug her in.